Privacy Policy

Last updated: March 5, 2026

      Birthday Book stores all your data on your device. We never upload your contacts, messages, photos, or personal information to any server.
    

What data stays on your phone

Everything. Birthday Book stores the following locally on your device using encrypted device storage:

Names and birthdays you import or add
Phone numbers linked to birthdays
Birthday messages you write or customize
Contact photos synced from your phone
App settings and notification preferences
Purchase and subscription status

This data never leaves your phone. We have no server, no database, and no account system. We cannot see, access, or recover your data.

What we send to external services

Two features involve sending data to external servers:

Photo scanning (OCR): When you scan a birthday list, the photo is sent to our secure API proxy (hosted on Cloudflare Workers) which forwards it to Anthropic's Claude API for text recognition. The photo is processed and immediately discarded — it is not stored.
AI card generation: When you create an AI birthday card, the recipient's photo and first name are sent to our API proxy, which forwards them to fal.ai for image generation. The photo is processed and immediately discarded — it is not stored.

In both cases, data is transmitted over HTTPS encryption. Our API proxy does not log, store, or retain any images or personal data beyond the duration of the request.

Contacts and calendars

Birthday Book requests access to your contacts and calendars to find birthdays. This data is read locally on your device. Contact and calendar data is never sent to any server. You can deny these permissions and add birthdays manually instead.

Notifications

Birthday Book uses local push notifications to remind you about upcoming birthdays. Notifications are scheduled on your device. No notification data is sent to any external service.

Purchases

Subscriptions and in-app purchases are processed by Apple through the App Store and managed by RevenueCat. We do not collect or store payment information. RevenueCat receives an anonymous device identifier to manage subscription status. See RevenueCat's privacy policy for details.

Analytics and tracking

Birthday Book does not include any analytics SDKs, tracking pixels, or advertising frameworks. We do not track your usage, behavior, or location. We do not serve ads.

Children's privacy

Birthday Book does not knowingly collect data from children under 13. The app does not require an account and stores no personal data on external servers.

Data deletion

Since all data is stored locally on your device, you can delete all Birthday Book data at any time by deleting the app. You can also export a backup before deleting. No server-side data exists to delete.

Changes to this policy

If we update this policy, we'll post the new version here with the updated date. Material changes will be communicated through the app.

Contact

Questions about this policy? Email support@birthdaybook.io